AU2021354512A1 - Disinfectant composition - Google Patents

Abstract

Provided is a disinfectant composition that does not contain previously commonly used disinfectant agents, or produces a high disinfectant effect even if the content amount of the disinfectant agent is reduced.　A disinfectant composition containing: (A) a C8-24 internal olefin sulfonate; (B) one or more organic acids selected from monocarboxylic acid, hydroxy acid, and dicarboxylic acid; and water.

Description

DESCRIPTION

Title of the Invention: DISINFECTANT COMPOSITION

Field of the Invention

[0001]

The present invention relates to a disinfectant

composition.

Background of the Invention

[0002]

In recent years, regulations on substances having

adverse effects on the environment or humans have been

tightened. Further, consumers are also becoming more

interested in products using reliable and safe

substances. Under such circumstances, increased hygiene

awareness has led to the use of disinfectant compositions

having disinfecting effects.

However, there are concerns that many disinfecting

base agents included in disinfectant compositions have

significant adverse effects on the environment or humans,

and that surfactants used together with them are also

derived from petrochemical raw materials, and others.

Therefore, desired is a disinfectant composition using no

disinfecting base agents that have conventionally been

widely used or using them in a reduced amount and instead using safe and reliable base agents to exhibit disinfecting performance.

[00031

JP-A 2015-178548 discloses a disinfecting cleaning

agent composition comprising 0.5 mass% or more and 20

mass% or less of (a) an internal olefin sulfonate with 12

or more and 18 or less carbons, 0.1 mass% or more and 1.0

mass% or less of (b) an oil-soluble disinfectant and 0.25

mass% or more and 7.0 mass% or less of (c) a solvent with

a LogP of 2.0 or more and 4.0 or less, and having a pH of

4.7 or more and 7.5 or less at 250C, thereby having high

disinfecting effects even if used for a short period of

time.

JP-A 2001-288018 discloses a disinfectant

composition for use in automatic washing machines

comprising (A) one or more selected from hypochlorite and

hypochlorous acid, (B) one or more selected from

amphoteric surfactants and cationic surfactants and (C) a

pH adjuster, thereby showing high disinfecting effects on

spore-forming bacteria or molds.

Summary of the Invention

[0004]

The present invention provides a disinfectant

composition exhibiting high disinfecting ability even if

containing no disinfecting base agents that have conventionally been widely used or containing them in a reduced amount.

[00051

The present invention relates to a disinfectant

composition containing, (A) an internal olefin sulfonate

with 8 or more and 24 or less carbons (hereinafter

referred to as component (A)), (B) one or more organic

acids selected from monocarboxylic acids, hydroxy acids

and dicarboxylic acids (hereinafter referred to as

component (B)) and water.

[00061

Further, the present invention relates to a

disinfectant composition composed of, essentially (A) an

internal olefin sulfonate with 8 or more and 24 or less

carbons (hereinafter referred to as component (A)), (B)

one or more organic acids selected from monocarboxylic

acids, hydroxy acids and dicarboxylic acids (hereinafter

referred to as component (B)), optionally (C) an organic

solvent with a LogP of 0.5 or more and 10 or less

(hereinafter referred to as component (C)), optionally

(D) a nonionic surfactant (hereinafter referred to as

component (D)), and water.

[0007]

Further, the present invention relates to a method

for disinfection including, bringing the disinfectant

composition of the present invention as a raw solution or after dilution with water into contact with a target object in which a fungus is present.

[00081

According to the present invention, provided is a

disinfectant composition exhibiting high disinfecting

ability even if containing no disinfecting base agents

that have conventionally been widely used or containing

them in a reduced amount.

Embodiments of the Invention

[00091

[Disinfectant composition]

The disinfectant composition of the present

invention, in which an internal olefin sulfonate of

component (A) produced from natural raw materials and a

specific organic acid of component (B) are used together,

can exhibit high disinfecting ability even if containing

no disinfecting base agents that have conventionally been

widely used or containing them in a reduced amount.

The reason why the disinfectant composition of the

present invention exhibits high disinfecting ability is

not wholly certain, but inferred to be as follows.

Component (A) adsorbs on and permeates through

fungal cell membranes, thereby acting on the cell

membranes and membrane proteins and inhibiting fungal

membrane function, thereby killing the fungi. On the

other hand, the specific organic acid of component (B) adsorbs on and permeates through fungal cell membranes without proton dissociation, and component (B) releases protons within the fungal cell membranes, thereby reducing intracellular pH and inhibiting metabolism, thereby killing the fungi. It is inferred that, when components (A) and (B) are used together, component (A) unexpectedly further promotes the permeation of component

(B) through cell membranes, and owing to this synergistic

effect of components (A) and (B), high disinfecting

effects are exhibited.

[0010]

<Component (A)>

Component (A) is an internal olefin sulfonate with

8 or more and 24 or less carbons. Component (A) can be

obtained by sulfonating an internal olefin.

Component (A) has 8 or more, preferably 12 or more

and more preferably 16 or more carbons from the viewpoint

of disinfecting ability, and 24 or less, preferably 22 or

less, more preferably 20 or less, further preferably 18

or less and furthermore preferably 16 carbons from the

viewpoint of enhancing cleaning performance.

[0011]

Component (A) preferably includes internal olefin

sulfonate (IO-lS) with 8 or more and 24 or less carbons

in which a sulfonic acid group is present at position 2

or more and 4 or less and internal olefin sulfonate (10

2S) with 8 or more and 24 or less carbons in which a sulfonic acid group is present at position 5 or more (10

2S). Further, the mass ratio of (IO-lS) to (IO-2S), (10

1S)/(IO-2S), is preferably 0.5 or more and 6.5 or less.

[0012]

The mass ratio of the content of (IO-lS) to the

content of (IO-2S) in component (A), (IO-1S)/(IO-2S), is

preferably 0.5 or more, more preferably 0.6 or more,

further preferably 0.7 or more, furthermore preferably

0.8 or more and furthermore preferably 1 or more, and

preferably 6.5 or less, more preferably 6 or less,

furthermore preferably 5.5 or less, furthermore

preferably 5 or less, furthermore preferably 4.5 or less,

furthermore preferably 4 or less, furthermore preferably

3.5 or less, furthermore preferably 3 or less,

furthermore preferably 2.5 or less, furthermore

preferably 2 or less and furthermore preferably 1.5 or

less from the viewpoint of attaining both disinfecting

ability and cleaning ability.

[0013]

Note that the content of each compound having a

sulfonic acid group at a different position in component

(A) can be measured by high-performance liquid

chromatography mass spectrometry (hereinafter abbreviated

as HPLC-MS). In the present specification, the content

of each compound having a sulfonic acid group at a

different position is determined as the mass ratio of the compound having a sulfonic acid group at each position to all HAS of component (A) based on HPLC-MS peak areas.

Here, "HAS" refers to hydroxy alkane sulfonates,

i.e., a hydroxy species of internal olefin sulfonates,

among compounds produced by sulfonation of internal

olefin sulfonic acids.

In the present invention, "internal olefin

sulfonate (IO-lS) with 8 or more and 24 or less carbons

in which a sulfonic acid group is present at position 2

or more and 4 or less" means a sulfonate with 8 or more

and 24 or less carbons in which a sulfonic acid group is

present at position 2 or more and 4 or less in a HAS

species with 8 or more and 24 or less carbons.

Further, "internal olefin sulfonate (IO-2S) with 8

or more and 24 or less carbons in which a sulfonic acid

group is present at position 5 or more" means a sulfonate

with 8 or more and 24 or less carbons in which a sulfonic

acid group is present at position 5 or more in a HAS

species with 8 or more and 24 or less carbons.

[0014]

Note that the internal olefin sulfonate of

component (A) is composed by including internal olefin

sulfonate (IO-lS) with 8 or more and 24 or less carbons

in which a sulfonic acid group is present at position 2

or more and 4 or less and internal olefin sulfonate (10

2S) with 8 or more and 24 or less carbons in which a

sulfonic acid group is present at position 5 or more.

The maximum value of the bonding position of a sulfonic

acid group in internal olefin sulfonate (IO-2S) is

different depending of the number of carbons.

[0015]

The mass ratio (IO-1S)/(IO-2S) for component (A)

is based on finally obtained component (A). For example,

even if an internal olefin sulfonate is obtained by

mixing internal olefin sulfonates having a mass ratio

(IO-1S)/(IO-2S) outside the above range, the internal

olefin sulfonate is qualified as the internal olefin

sulfonate of component (A) if the mass ratio (IO-lS)/(IO

2S) in the composition of the internal olefin sulfonate

falls within the above range.

[0016]

The content of (IO-lS) in component (A) is

preferably 90 mass% or less, more preferably 85 mass% or

less and further preferably 80 mass% or less, and

preferably 30 mass% or more and more preferably 40 mass%

or more from the viewpoint of attaining both disinfecting

ability and cleaning ability.

[0017]

Examples of a salt in the internal olefin

sulfonate of component (A) include one or more selected

from alkali metal salts, alkaline earth metal (1/2 atom)

salts, ammonium salts and organic ammonium salts. The

alkali metal salts are preferably a sodium salt and a

potassium salt, and the organic ammonium salts are preferably alkanol ammonium salts with 1 or more and 6 or less carbons.

[0018]

Component (A) of the present invention can be

obtained by using as a raw material, for example, an

internal olefin with 8 or more and 24 or less carbons in

which the mass ratio of olefin (10-1) with 8 or more and

24 or less carbons in which a double bond is present at

position 1 or more and 3 or less to olefin (10-2) with 8

or more and 24 or less carbons in which a double bond is

present at position 5 or more, (10-1)/(10-2), is 0.50 or

more and 6.5 or less.

Note that the internal olefin used to obtain

component (A) is composed of olefin (10-1) with 8 or more

and 24 or less carbons in which a double bond is present

at position 1 or more and 3 or less, an olefin with 8 or

more and 24 or less carbons in which a double bond is

present at position 4, and olefin (10-2) with 8 or more

and 24 or less carbons in which a double bond is present

at position 5 or more. The maximum value of the position

of a double bond in olefin (10-2) is different depending

of the number of carbons.

[0019]

The mass ratio of olefin (10-1) with 8 or more and

24 or less carbons in which a double bond is present at

position 1 or more and 3 or less to olefin (10-2) with 8

or more and 24 or less carbons in which a double bond is present at position 5 or more in the internal olefin with

8 or more and 24 or less carbons, (10-1)/(10-2), is

preferably 6.5 or less, more preferably 6 or less,

further preferably 5.5 or less, furthermore preferably 5

or less, furthermore preferably 4.5 or less, furthermore

preferably 3 or less, furthermore preferably 2.5 or less,

furthermore preferably 2 or less and furthermore

preferably 1.5 or less, and preferably 0.50 or more, more

preferably 0.55 or more and further preferably 0.6 or

more from the viewpoint of attaining both disinfecting

ability and cleaning ability.

[0020]

Note that the mass ratio (10-1)/(10-2) for the

internal olefin used to obtain component (A) may be based

on finally obtained component (A). For example, even if

an internal olefin sulfonate is obtained by mixing

internal olefin sulfonates obtained by using as a raw

material an olefin having a mass ratio (10-1)/(10-2)

outside the above range, the internal olefin sulfonate

can be qualified as the internal olefin sulfonate of

component (A) obtained by using as a raw material the

predetermined olefin if the mass ratio (10-1)/(10-2) in

the composition of the olefin considered to be a raw

material olefin falls within the above range.

[0021]

The olefin used as a raw material for component

(A) has 8 or more, preferably 12 or more and more preferably 16 or more carbons from the viewpoint of disinfecting ability, and 22 or less, preferably 20 or less, more preferably 18 or less and further preferably

16 carbons from the viewpoint of enhancing cleaning

performance.

[0022]

The internal olefin used as a raw material for

component (A) also includes one containing trace amounts

of so-called alfa-olefins (hereinafter also referred to

as a-olefins) in which the position of a double bond is

present at position 1 in the carbon chain. The content

of alfa-olefins in the internal olefin is preferably 10

mass% or less, more preferably 5 mass% or less and

further preferably 3 mass% or less, and preferably 0.05

mass% or more and more preferably 0.01 mass% or more from

the viewpoints of low-temperature stability, reduced

production costs and enhanced productivity.

[0023]

Sulfonation of internal olefins quantitatively

produces B-sultones, and part of the B-sultones changes

into y-sultones and olefin sulfonic acids, which are

further converted into hydroxy alkane sulfonates and

olefin sulfonates during neutralization and hydrolysis

processes (for example, J. Am. Oil Chem. Soc. 69, 39

(1992)). Here, hydroxy alkane sulfonates in which a

hydroxy group is located internal to the alkane chain,

and olefin sulfonates in which a double bond is located internal to the olefin chain are obtained. Further, the obtained product is mainly a mixture of them, and may partially include trace amounts of hydroxy alkane sulfonates having a hydroxy group at the terminal of the carbon chain, or olefin sulfonates having a double bond at the terminal of the carbon chain.

In the present specification, each of these

products and a mixture of them are collectively referred

to as the internal olefin sulfonate (component (A)).

Further, the hydroxy alkane sulfonates are referred to as

a hydroxy species of internal olefin sulfonates (HAS),

and the olefin sulfonates are referred to as an olefin

species of internal olefin sulfonates (hereinafter also

referred to as IOS).

Note that the mass ratio of a compound in

component (A) can be measured by HPLC-MS. Specifically,

the mass ratio can be determined from HPLC-MS peak areas

for component (A).

[0024]

A distribution of double bonds in the raw material

internal olefin can be measured, for example, by gas

chromatography mass spectrometry (hereinafter abbreviated

as GC-MS). Specifically, by precisely separating

components with different carbon chain lengths and double

bond positions from one another by gas chromatography

spectrometry (hereinafter abbreviated as GC) and

subjecting each to mass spectrometry (hereinafter abbreviated as MS), the double bond positions can be identified, and the proportion of each can be determined from the GC peak areas. For the content of each olefin having a double bond at a specific position mentioned above, the value determined from GC peak areas is used.

Further, when a mixture of olefins with different carbon

numbers is used, the position distribution of double

bonds is represented by a position distribution of double

bonds in olefins with the same carbon number.

[0025]

Note that, in the present specification, when a

mixture of a plurality of internal olefin sulfonates

obtained from a plurality of types of raw material

olefins with different double bond positions is used, the

position distribution of double bonds in the olefin used

as a raw material for the internal olefin sulfonate is

calculated as a distribution in each olefin with the same

carbon number.

[0026]

<Component (B)>

Component (B) is one or more organic acids

selected from monocarboxylic acids, hydroxy acids and

dicarboxylic acids.

[0027]

Suitable as component (B) is an organic acid with

an acid dissociation constant (pKa) at 25°C (hereinafter

also referred to as "pKa (250C)") of preferably 1 or more, more preferably 1.1 or more, further preferably 1.2 or more, furthermore preferably 1.5 or more, furthermore preferably 2 or more, furthermore preferably 2.5 or more, furthermore preferably 3 or more and furthermore preferably 3.7 or more, and preferably 10 or less, more preferably 9 or less, further preferably 8 or less, furthermore preferably 7 or less, furthermore preferably

6 or less, furthermore preferably 5.5 or less and

furthermore preferably 5 or less from the viewpoint of

disinfecting ability.

When the pH of the disinfectant composition of the

present invention is acidic, component (B) having a pKa

value falling within the above range is preferable

because it has an increased amount of non-acid

dissociation molecules, permeates through the inside of

cells more easily, and makes acid dissociation more

likely to occur within the fungal cells, thereby showing

high disinfecting ability.

The pKa (250C) of component (B) of the present

invention represents the pKa (250C) of the compound of

component (B) at a concentration of 0.1 mol/L when water

is used as a solvent.

For "acid dissociation constant (pKa)," pKa at

250C described in "Handbook of Chemistry, basic edition,

revised 5th edition edited by the Chemical Society of

Japan" (February 20, 2004, published by MARUZEN CO.,

LTD., pp. 11-334 to 11-343) or on Chemicalize

(https://chemicalize.com/welcome) can be used.

[0028]

Suitable as component (B) is an organic acid whose

solubility in water at a pH of 7 (hereinafter also

referred to as "solubility (pH=7)") is preferably 0.0001

mg/mL or more, more preferably 0.0002 mg/mL or more,

further preferably 0.0003 mg/mL or more, furthermore

preferably 0.001 mg/mL or more, furthermore preferably

0.01 mg/mL or more, furthermore preferably 0.1 mg/mL or

more, furthermore preferably 1 mg/mL or more, furthermore

preferably 10 mg/mL or more, furthermore preferably 100

mg/mL or more, furthermore preferably 500 mg/mL or more,

furthermore preferably 1000 mg/mL or more, furthermore

preferably 5000 mg/mL or more and furthermore preferably

10000 mg/mL or more, and preferably 200000 mg/mL or less,

more preferably 190000 mg/mL or less, further preferably

180000 mg/mL or less, furthermore preferably 150000 mg/mL

or less, furthermore preferably 100000 mg/mL or less and

furthermore preferably 70000 mg/mL or less as it needs to

be dissolved in a solvent in order to act on fungi to

exhibit disinfecting ability.

For easy penetration of component (B) of the

present invention through the inside of fungal cells,

component (B) having a solubility (pH=7) falling within

the above range is preferable.

For "solubility (pH=7)" in the present invention,

solubility described on "Chemicalize

(https://chemicalize.com/welcome)" can be used.

[0029]

Suitable as component (B) is an organic acid with

preferably 1 or more, and preferably 24 or less, more

preferably 22 or less, further preferably 20 or less,

furthermore preferably 18 or less, furthermore preferably

16 or less, furthermore preferably 14 or less,

furthermore preferably 12 or less, furthermore preferably

10 or less and furthermore preferably 8 or less carbons

from the viewpoint of water-solubility or disinfecting

ability.

[0030]

Suitable as component (B) is an organic acid with

a molecular weight of preferably 30 or more, more

preferably 35 or more, further preferably 40 or more,

furthermore preferably 60 or more and furthermore

preferably 80 or more, and preferably 500 or less, more

preferably 490 or less, further preferably 480 or less,

furthermore preferably 400 or less, furthermore

preferably 350 or less, furthermore preferably 300 or

less, furthermore preferably 250 or less and furthermore

preferably 200 or less from the viewpoint of water

solubility or disinfecting ability.

[0031]

The monocarboxylic acids have preferably 1 or more

and more preferably 6 or more, and preferably 20 or less,

more preferably 18 or less, further preferably 16 or

less, furthermore preferably 14 or less, furthermore

preferably 12 or less, furthermore preferably 10 or less

and furthermore preferably 8 or less carbons from the

viewpoints of water-solubility, disinfecting ability and

odors.

Examples of the monocarboxylic acids include one

or more selected from caprylic acid (pKa 4.89, solubility

144 mg/mL, 8 carbons, molecular weight 144), sorbic acid

(pka 4.8, solubility 299 mg/mL, 6 carbons, molecular

weight 112), caproic acid (pKa 4.6, solubility 452 mg/mL,

6 carbons, molecular weight 116), propionic acid (pKa

4.62, solubility 12445 mg/mL, 3 carbons, molecular weight

74), formic acid (pKa 3.54, solubility 40766 mg/mL, 1

carbon, molecular weight 46), acetic acid (pKa 4.57,

solubility 25786 mg/mL, 2 carbons, molecular weight 60),

benzoic acid (pKa 4.08, solubility 430 mg/mL, 7 carbons,

molecular weight 122), capric acid (pKa 4.95, solubility

5.535 mg/mL, 10 carbons, molecular weight 172), lauric

acid (pKa 4.95, solubility 0.5744 mg/mL, 12 carbons,

molecular weight 200), 2-hexyldecanoic acid (pKa 5.12,

solubility 0.0051 mg/mL, 16 carbons, molecular weight

256) and 2-octyldecanoic acid (pKa 4.98, solubility

0.0007 mg/mL, 18 carbons, molecular weight 284).

Note that the monocarboxylic acids exclude

compounds that fall into hydroxy acids.

In parentheses, the pKa (250C), solubility (pH=7),

carbon number and molecular weight of each compound are

shown in this order.

[0032]

The hydroxy acids have preferably 2 or more, and

preferably 20 or less, more preferably 18 or less,

further preferably 16 or less, furthermore preferably 14

or less, furthermore preferably 12 or less, furthermore

preferably 10 or less and furthermore preferably 8 or

less carbons from the viewpoint of water-solubility or

disinfecting ability.

Examples of the hydroxy acids include one or more

selected from salicylic acid (pKa 2.97, solubility 1173

mg/mL, 7 carbons, molecular weight 138), lactic acid (pKa

3.8, solubility 21268 mg/mL, 3 carbons, molecular weight

90), tartaric acid (pKa 2.87, solubility 37131 mg/mL, 4

carbons, molecular weight 150), malic acid (pKa 3.23,

4.77, 4.5, solubility 38685 mg/mL, 4 carbons, molecular

weight 134), glycolic acid (pKa 3.65, solubility 43556

mg/mL, 2 carbons, molecular weight 76), gluconic acid

(pKa 3.86, solubility 126141 mg/mL, 6 carbons, molecular

weight 196), citric acid (pKa 2.9, 4.35, 5.69, solubility

47847 mg/mL, 6 carbons, molecular weight 192), gallic

acid (pKa 3.94, solubility 8626 mg/mL, 7 carbons,

molecular weight 170) and glyceric acid (pKa 3.42, solubility 59557 mg/mL, 3 carbons, molecular weight 106).

In parentheses, the pKa (250C), solubility (pH=7), carbon

number and molecular weight of each compound are shown in

this order.

[00331

The dicarboxylic acids have preferably 2 or more

and more preferably 4 or more, and preferably 20 or less,

more preferably 18 or less, further preferably 16 or

less, furthermore preferably 14 or less, furthermore

preferably 12 or less, furthermore preferably 10 or less

and furthermore preferably 8 or less carbons from the

viewpoint of water-solubility or disinfecting ability.

Examples of the dicarboxylic acids include one or

more selected from maleic acid (pKa 1.83, solubility 6642

mg/mL, 4 carbons, molecular weight 116), fumaric acid

(pKa 3, solubility 6642 mg/mL, 4 carbons, molecular

weight 116), oxalic acid (pKa 1.27, solubility 21764

mg/mL, 2 carbons, molecular weight 90), malonic acid (pKa

2.43, solubility 38974 mg/mL, 3 carbons, molecular weight

104), succinic acid (pKa 4.2, solubility 69013 mg/mL, 4

carbons, molecular weight 118), glutaric acid (pKa 3.76,

solubility 37852 mg/mL, 5 carbons, molecular weight 132),

adipic acid (pKa 4.3, solubility 30673 mg/mL, 6 carbons,

molecular weight 146), azelaic acid (pKa 4.15, solubility

689 mg/mL, 9 carbons, molecular weight 188), sebacic acid

(pKa 4.6, solubility 222 mg/mL, 10 carbons, molecular weight 202) and glutamic acid (pKa 1.88, solubility 38611 mg/mL, 5 carbons, molecular weight 147).

Note that the dicarboxylic acids exclude compounds

that fall into hydroxy acids.

In parentheses, the pKa (250C), solubility (pH=7),

carbon number and molecular weight of each compound are

shown in this order.

[0034]

Component (B) is preferably one or more organic

acids selected from caprylic acid, sorbic acid, caproic

acid, propionic acid, formic acid, acetic acid, benzoic

acid, salicylic acid, lactic acid, tartaric acid, malic

acid, glycolic acid, gluconic acid, citric acid, maleic

acid, fumaric acid, oxalic acid, adipic acid, glutamic

acid, succinic acid, sebacic acid and azelaic acid, more

preferably one or more organic acids selected from

caprylic acid, caproic acid, sorbic acid, lactic acid,

glycolic acid, gluconic acid, fumaric acid, succinic

acid, adipic acid, sebacic acid and azelaic acid, further

preferably one or more organic acids selected from sorbic

acid, lactic acid, succinic acid, glycolic acid, gluconic

acid, sebacic acid and adipic acid, and furthermore

preferably one or more organic acids selected from lactic

acid, succinic acid, gluconic acid and adipic acid from

the viewpoints of water-solubility, disinfecting ability

and odors.

[0035]

<Composition and others>

The disinfectant composition of the present

invention contains component (A) in an amount of

preferably 0.001 mass% or more, more preferably 0.002

mass% or more, further preferably 0.01 mass% or more,

furthermore preferably 0.1 mass% or more, furthermore

preferably 0.5 mass% or more and furthermore preferably 1

mass% or more, and preferably 50 mass% or less, more

preferably 30 mass% or less, further preferably 15 mass%

or less, furthermore preferably 10 mass% or less,

furthermore preferably 5 mass% or less and furthermore

preferably 3 mass% or less from the viewpoint of

enhancing disinfecting ability or cleaning performance.

[00361

The disinfectant composition of the present

invention contains component (B) in an amount of

preferably 0.0001 mass% or more, more preferably 0.0002

mass% or more, further preferably 0.001 mass% or more,

furthermore preferably 0.01 mass% or more, furthermore

preferably 0.1 mass% or more and furthermore preferably

0.2 mass% or more, and preferably 10 mass% or less, more

preferably 5 mass% or less, further preferably 3 mass% or

less, furthermore preferably 2 mass% or less, furthermore

preferably 1.5 mass% or less and furthermore preferably 1

mass% or less from the viewpoint of disinfecting ability

or water-solubility.

[0037]

The total content of components (A) and (B) in the

disinfectant composition of the present invention is

preferably 0.01 mass% or more, more preferably 0.02 mass%

or more, further preferably 0.1 mass% or more,

furthermore preferably 0.5 mass% or more and furthermore

preferably 1 mass% or more from the viewpoint of cleaning

ability, and preferably 20 mass% or less, more preferably

15 mass% or less, further preferably 10 mass% or less and

furthermore preferably 5 mass% or less from the viewpoint

of low-temperature stability.

[00381

The mass ratio between the content of component

(A) and the content of component (B) in the disinfectant

composition of the present invention, (B)/(A), is

preferably 0.001 or more, more preferably 0.01 or more,

further preferably 0.02 or more, furthermore preferably

0.05 or more, furthermore preferably 0.08 or more and

furthermore preferably 0.1 or more, and preferably 4 or

less, more preferably 3 or less, further preferably 2 or

less, furthermore preferably 1.5 or less, furthermore

preferably 1 or less, furthermore preferably 0.8 or less

and furthermore preferably 0.5 or less from the viewpoint

of disinfecting ability.

[00391

The disinfectant composition of the present

invention preferably further contains an organic solvent with a LogP of 0.5 or more and 10 or less as component

(C) from the viewpoint of enhancing disinfecting ability.

The LogP of component (C) is 0.5 or more,

preferably 0.8 or more and more preferably 1 or more, and

10 or less, preferably 7 or less, more preferably 5 or

less, further preferably 4 or less and furthermore

preferably 3 or less from the viewpoint of disinfecting

ability.

In the present invention, for the LogP,

calculation values determined by using ChemProperty of

ChemBioDraw Ultra ver. 14.0 by PerkinElmer, Inc. are

used. Note that the larger the logP value is, the higher

the hydrophobicity is.

[0040]

The organic solvent of component (C) has

preferably 2 or more, more preferably 4 or more and

further preferably 6 or more, and preferably 30 or less,

more preferably 28 or less, further preferably 24 or

less, furthermore preferably 20 or less, furthermore

preferably 16 or less, furthermore preferably 14 or less

and furthermore preferably 12 or less carbons from the

viewpoints of water-solubility and disinfecting ability.

[0041]

Examples of component (C) include one or more

organic solvents selected from hexyl glycerin (LogP 1.11,

9 carbons), octanediol (LogP 1.68, 8 carbons), hexanol

(LogP 1.8, 6 carbons), 2-ethylhexyl glyceryl ether (LogP

1.93, 11 carbons), heptanol (LogP 2.22, 7 carbons),

decanediol (LogP 2.52, 10 carbons), octanol (LogP 2.64, 8

carbons), glyceryl caprylate (LogP 1.64, 11 carbons), 3

isodecyloxy-1,2-propanediol (LogP 2.69, 13 carbons),

hexyldecanol (LogP 5.96, 16 carbons), octyldodecanol

(LogP 7.63, 20 carbons) and decyltetradecanol (LogP 9.3,

24 carbons), and one or more organic solvents selected

from octanediol, 2-ethylhexyl glyceryl ether, glyceryl

caprylate, 1-octanol, 3-isodecyloxy-1,2-propanediol and

hexyldecanol are preferable and one or more organic

solvents selected from octanediol, 2-ethylhexyl glyceryl

ether, glyceryl caprylate and 1-octanol are more

preferable from the viewpoints of water-solubility and

disinfecting ability.

[0042]

When the disinfectant composition of the present

invention contains component (C), it contains component

(C) in an amount of preferably 0.0001 mass% or more, more

preferably 0.0002 mass% or more, further preferably 0.001

mass% or more, furthermore preferably 0.01 mass% or more,

furthermore preferably 0.1 mass% or more, furthermore

preferably 0.5 mass% or more and furthermore preferably 1

mass% or more, and preferably 50 mass% or less, more

preferably 30 mass% or less, further preferably 20 mass%

or less, furthermore preferably 15 mass% or less,

furthermore preferably 10 mass% or less, furthermore

preferably 5 mass% or less, furthermore preferably 3 mass% or less and furthermore preferably 2 mass% or less from the viewpoint of disinfecting ability.

[0043]

When the disinfectant composition of the present

invention contains component (C), the mass ratio between

the content of component (A) and the content of component

(C) in the composition, (C)/(A), is preferably 0.001 or

more, more preferably 0.01 or more, further preferably

0.05 or more, furthermore preferably 0.1 or more and

furthermore preferably 0.3 or more, and preferably 10 or

less, more preferably 5 or less, further preferably 3 or

less, furthermore preferably 1 or less and furthermore

preferably 0.7 or less from the viewpoint of enhancing

disinfecting ability.

[0044]

The disinfectant composition of the present

invention preferably further contains a nonionic

surfactant as component (D) from the viewpoint of

enhancing cleaning performance.

[0045]

Examples of the nonionic surfactant of component

(D) include polyoxyalkylene alkyl ethers having an alkyl

group with 8 or more and 18 or less carbons,

polyoxyalkylene alkenyl ethers having an alkenyl group

with 8 or more and 18 or less carbons, polyoxyalkylene

sorbitan fatty acid esters having a fatty acid group with

8 or more and 18 or less carbons, alkyl glycosides having an alkyl group with 8 or more and 18 or less carbons, alkyl polyglycosides having an alkyl group with 8 or more and 18 or less carbons, sucrose fatty acid esters having a fatty acid group with 8 or more and 18 or less carbons, alkyl polyglyceryl ethers having an alkyl group with 8 or more and 18 or less carbons and the like, and one or two or more of them can be used.

Component (D) is preferably one or more selected

from alkyl glycosides having an alkyl group with 8 or

more and 18 or less carbons, alkyl polyglycosides having

an alkyl group with 8 or more and 18 or less carbons,

polyoxyalkylene alkyl ethers having an alkyl group with 8

or more and 18 or less carbons and polyoxyalkylene

alkenyl ethers having an alkenyl group with 8 or more and

18 or less carbons and more preferably one or more

selected from compounds represented by the following

general formula (Dl) and compounds represented by the

following general formula (D2) from the viewpoint of

attaining both cleaning performance and disinfecting

performance.

[0046]

A compound represented by the following general

formula (Dl) is suitable as component (D):

Rld (OR 2 d) xGy (Dl)

wherein Rld represents a straight-chain or

branched-chain alkyl group with 8 or more and 18 or less

carbons, R 2 d represents an alkylene group with 2 or more and 4 or less carbons, G represents a residue derived from a sugar with 5 or 6 carbons, x represents numbers whose average value is 0 or more and 5 or less, and y represents numbers whose average value is 1 or more and 3 or less.

[0047]

Rld in the general formula (Dl) is a straight-chain

or branched-chain alkyl group and preferably a straight

chain alkyl group with 8 or more and preferably 10 or

more, and 18 or less, preferably 16 or less and more

preferably 14 or less carbons from the viewpoint of

attaining both cleaning performance and disinfecting

performance. Further, the alkylene group represented by

R 2 d preferably has 2 carbons from the viewpoint of

attaining both cleaning performance and disinfecting

performance. Further, the structure of the residue

derived from a sugar with 5 or 6 carbons represented by G

is determined by a monosaccharide or a di- or higher

saccharide used. Examples of G include residues derived

from monosaccharides such as glucose, galactose, xylose,

mannose, lyxose, arabinose and fructose or mixtures of

them or the like, and include residues derived from di

or higher saccharides such as maltose, xylobiose,

isomaltose, cellobiose, gentibiose, lactose, sucrose,

nigerose, tulanose, raffinose, gentianose and menditose

or mixtures of them or the like. Among them, preferable

raw materials are glucose and fructose in the monosaccharides, and maltose and sucrose in the di- or higher saccharides.

x in the general formula (Dl) is the average

number of added moles of OR 2 d, and is preferably 0 or

more, and preferably 5 or less, more preferably 3 or less

and further preferably 1 or less, and may be 0.

When the average value of y in the general formula

(Dl) is more than 1, in other words, when the hydrophilic

group is a sugar chain of a di- or higher saccharide, the

types of bond found in the sugar chain can include 1-2,

1-3, 1-4, or 1-6 bond or a-, B-pyranoside bond or

furanoside bond and any mixtures which are mixtures of

these types of bond.

The average value of y in the general formula (Dl)

is 1 or more, and 3 or less, preferably 2 or less and

more preferably 1.5 or less. This value for y (average

degree of condensation of sugar) is measured by 'H-NMR.

See JP-A H8-53696, page 6, column 10, line 26 to page 7,

column 11, line 15 for a specific measurement method.

[0048]

Component (D) is preferably a compound represented

by the following formula (D2):

R 3 d-O-[ (C 2 H 4 0)s(C 3 H6 O)t]-H (D2)

wherein R 3d is a straight-chain or branched-chain

alkyl group with 8 or more and 18 or less carbons or a

straight-chain or branched-chain alkenyl group with 8 or

more and 18 or less carbons; and s and t are average numbers of added moles, and s is a number of 1 or more and 50 or less and t is a number of 0 or more and 5 or less, and (C 2 H 4 0) and (C3 H 6 0) may be random polymers or block polymers.

[0049]

R 3 d in the general formula (D2) has 8 or more and

preferably 10 or more, and 18 or less, preferably 16 or

less and more preferably 14 or less carbons from the

viewpoint of attaining both cleaning performance and

disinfecting performance. R 3 d is a straight-chain or

branched-chain alkyl group or a straight-chain or

branched-chain alkenyl group and preferably a straight

chain or branched-chain alkyl group.

s in the general formula (D2) is 1 or more,

preferably 2 or more and further preferably 3 or more,

and 50 or less, preferably 40 or less, more preferably 30

or less, further preferably 28 or less and furthermore

preferably 24 or less from the viewpoint of attaining

both cleaning performance and disinfecting performance.

t in the general formula (D2) is 0 or more, and 5

or less, preferably 3 or less and more preferably 2 or

less, and may be 0 from the viewpoint of attaining both

cleaning performance and disinfecting performance.

[0050]

When the disinfectant composition of the present

invention contains component (D), it contains component

(D) in an amount of preferably 0.001 mass% or more, more preferably 0.002 mass% or more, further preferably 0.01 mass% or more, furthermore preferably 0.05 mass% or more, furthermore preferably 0.1 mass% or more and furthermore preferably 0.5 mass% or more, and preferably 50 mass% or less, more preferably 30 mass% or less, further preferably 10 mass% or less, furthermore preferably 5 mass% or less, furthermore preferably 3 mass% or less, furthermore preferably 1.5 mass% or less, furthermore preferably 1 mass% or less and furthermore preferably 0.8 mass% or less from the viewpoint of attaining both cleaning performance and disinfecting performance.

[0051]

When the disinfectant composition of the present

invention contains component (D), the mass ratio of the

content of component (A) to the content of component (D)

in the composition, (A)/(D), is preferably 0.1 or more,

more preferably 0.5 or more, further preferably 1 or

more, furthermore preferably 2 or more and furthermore

preferably 3 or more, and preferably 10 or less, more

preferably 8 or less and further preferably 5 or less

from the viewpoint of attaining both cleaning performance

and disinfecting performance.

[0052]

From the viewpoint of considering human safety and

the environment, it is preferable that the disinfectant

composition of the present invention be free of

disinfecting base agents, and it is more preferable that the composition be substantially free of, in particular, disinfecting base agents other than components (A) and

(B).

In other words, the present invention provides a

disinfectant composition composed of, essentially

component (A), component (B), optionally component (C),

optionally component (D), and water.

Here, "essentially" in the context of the

disinfectant composition of the present invention means

that the composition may contain components other than

components (A), (B), (C) and (D) and water in a range

that the action or effects of the present invention are

not affected, but it does not contain components that

affect the action or effects of the present invention,

for example, a disinfecting base agent other than

components (A) and (B).

Examples of the disinfecting base agent include

one or more selected from triclosan,

isopropylmethylphenol, parachlorometaxylenol,

chlorphenesin, piroctone olamine, benzethonium chloride,

benzalkonium chloride, cetylpyridinium chloride,

chlorhexidine and polylysine.

The content of a disinfecting base agent other

than components (A) and (B) in the disinfectant

composition of the present invention is preferably 20

mass% or less, more preferably 1 mass% or less, further

preferably 0.1 mass% or less and furthermore preferably

0.01 mass% or less from the viewpoint of enhancing

disinfecting ability while considering human safety and

the environment.

[00531

The disinfectant composition of the present

invention can be optionally formulated with polymers,

fragrances, colorants, antiseptics, antioxidants or the

like (excluding components (A) to (D)) in a range that

the action or effects of the present invention are not

affected and in order to increase added values of

products.

[0054]

The disinfectant composition of the present

invention contains water. In other words, the balance

other than components (A) to (D) and the optional

components is water. The disinfectant composition of the

present invention contains water in an amount of

preferably 20 mass% or more, more preferably 30 mass% or

more, further preferably 40 mass% or more and furthermore

preferably 50 mass% or more, and preferably 99 mass% or

less and more preferably 98 mass% or less. Ion exchange

water, sterilized ion exchange water or the like is

preferably used as the water.

[00551

The pH of the disinfectant composition of the

present invention at 200C is preferably 1 or more, more

preferably 2 or more and further preferably 3 or more, and preferably 7 or less, more preferably 6.5 or less, further preferably 6 or less, furthermore preferably 5.5 or less, furthermore preferably 5 or less and furthermore preferably 4.5 or less from the viewpoint of disinfecting ability or corrosiveness of humans or surfaces to be cleaned.

[00561

The disinfectant composition of the present

invention can be favorably used for hard surfaces.

Examples of the hard surfaces include bathrooms,

bathtubs, washbowls, tiles, lavatories, wash basins,

mirrors, kitchen sinks, counter tops, plumbing fixtures,

furniture, home appliances or the like.

The disinfectant composition of the present

invention can be favorably used for textile products.

Examples of the textile products include clothing,

towels, bedding, textile products for bedding (sheets,

pillowcases or the like) and others. Washable textile

products other than these can also be targeted.

The disinfectant composition of the present

invention can be favorably used for cleansing skin. The

disinfectant composition is used, for example, as any of

hand finger cleansers such as hand soap or the like, body

shampoos and hair shampoos.

[0057]

Examples of a fungus targeted by the disinfectant

composition of the present invention include yeasts represented by the genus Saccharomyces, the genus

Rhodotorula, the genus Pichia and the genus Candida,

molds represented by the genus Cladosporium, the genus

Phoma and the genus Exophiala, gram-negative bacteria

including food poisoning bacteria such as bacteria of

the genus Escherichia such as Escherichia coli or the

like, bacteria of the genus Pseudomonas such as

Pseudomonas aeruginosa, Pseudomonas putida or the like,

bacteria of the genus Serratia such as Serratia

marcescens or the like, bacteria of the genus

Burkholderia such as Burkholderia cepacia or the like,

bacteria of the genus Klebsiella such as Klebsiella

pneumoniae, Klebsiella oxytoca or the like, bacteria of

the genus Enterobacter such as Enterobacter cloacae or

the like, bacteria of the genus Alcaligenes such as

Alcaligenes faecalis or the like, bacteria of the genus

Providencia such as Providencia rettgeri or the like,

bacteria of the genus Methylobacterium, bacteria of the

genus Salmonella and others, and gram-positive bacteria

represented by bacteria of the genus Staphylococcus such

as Staphylococcus aureus, Staphylococcus saprophyticus

or the like and bacteria of the genus Enterococcus such

as Enterococcus faecalis or the like. Among these, the

disinfectant composition of the present invention shows

excellent disinfecting effects particularly on

Escherichia coli and Staphylococcus aureus.

[00581

[Method for disinfection]

The present invention provides a method for

disinfection including, bringing the disinfectant

composition of the present invention as a raw solution or

as a treatment liquid diluted with water into contact

with a target object in which a fungus is present.

The matters stated in the disinfectant composition

of the present invention can be appropriately applied to

the method for disinfection of the present invention.

[0059]

In the method for disinfection of the present

invention, the disinfectant composition of the present

invention is brought into contact with the target object

in which a fungus is present. Specifically, preferable

examples include a method for disinfection including,

bringing the disinfectant composition as a raw solution

into contact with the target object in which a fungus is

present, or bringing a treatment liquid prepared by

diluting the disinfectant composition with water

(hereinafter also referred to as the treatment liquid of

the present invention) into contact with the target

object in which a fungus is present.

[0060]

In the preparation of the treatment liquid of the

present invention, the water used to dilute the

disinfectant composition of the present invention is

generally assumed to be water containing hardness components such as tap water. The hardness of the water used for dilution is preferably 20°dH or less and more preferably 10°dH or less, and O0 dH or more from the viewpoint of exhibiting disinfecting ability.

[0061]

The treatment liquid of the present invention

contains component (A) in an amount of preferably 0.0003

mass% or more, more preferably 0.0005 mass% or more,

further preferably 0.003 mass% or more, furthermore

preferably 0.03 mass% or more, furthermore preferably 0.2

mass% or more and furthermore preferably 0.3 mass% or

more, and preferably 15 mass% or less, more preferably 10

mass% or less, further preferably 5 mass% or less,

furthermore preferably 3 mass% or less, furthermore

preferably 1.5 mass% or less and furthermore preferably 1

mass% or less from the viewpoint of attaining both

cleaning performance and disinfecting performance.

[0062]

The treatment liquid of the present invention

contains component (B) in an amount of preferably 0.00003

mass% or more, more preferably 0.00006 mass% or more,

further preferably 0.0003 mass% or more, furthermore

preferably 0.003 mass% or more, furthermore preferably

0.03 mass% or more and furthermore preferably 0.06 mass%

or more, and preferably 3 mass% or less, more preferably

1.5 mass% or less, further preferably 1 mass% or less and furthermore preferably 0.5 mass% or less from the viewpoint of disinfecting performance.

[00631

The treatment liquid of the present invention

optionally contains component (C) in an amount of

preferably 0.00003 mass% or more, more preferably 0.00006

mass% or more, further preferably 0.0003 mass% or more,

furthermore preferably 0.003 mass% or more, furthermore

preferably 0.03 mass% or more, furthermore preferably

0.15 mass% or more and furthermore preferably 0.3 mass%

or more, and preferably 15 mass% or less, more preferably

10 mass% or less, further preferably 5 mass% or less,

furthermore preferably 4 mass% or less, furthermore

preferably 3 mass% or less, furthermore preferably 2

mass% or less, furthermore preferably 1 mass% or less and

furthermore preferably 0.5 mass% or less from the

viewpoint of disinfecting performance.

[0064]

The treatment liquid of the present invention

optionally contains component (D) in an amount of

preferably 0.0003 mass% or more, more preferably 0.0006

mass% or more, further preferably 0.003 mass% or more,

furthermore preferably 0.0015 mass% or more, furthermore

preferably 0.03 mass% or more and furthermore preferably

0.15 mass% or more, and preferably 15 mass% or less, more

preferably 10 mass% or less, further preferably 3 mass%

or less, furthermore preferably 1.5 mass% or less, furthermore preferably 1 mass% or less, furthermore preferably 0.5 mass% or less, furthermore preferably 0.3 mass% or less and furthermore preferably 0.2 mass% or less from the viewpoint of attaining both cleaning performance and disinfecting performance.

[00651

The content of a disinfecting base agent other

than components (A) and (B) in the treatment liquid of

the present invention is preferably 6 mass% or less, more

preferably 0.3 mass% or less, further preferably 0.03

mass% or less and furthermore preferably 0.003 mass% or

less from the viewpoint of enhancing disinfecting ability

while considering human safety and the environment.

[00661

In the treatment liquid of the present invention,

the mass ratios (B)/(A), (C)/(A) and (A)/(D) fall within

the same ranges as stated in the disinfectant composition

of the present invention.

[0067]

In the method for disinfection of the present

invention, it is preferable that the disinfectant

composition of the present invention or the treatment

liquid of the present invention be brought into contact

with, and further applied or sprayed to, the target

object at a ratio of preferably 0.1 g or more, more

preferably 0.2 g or more and further preferably 1 g or

more, and preferably 50 g or less, more preferably 20 g or less and further preferably 10 g or less relative to an area of 100 cm 2 of the target object.

[00681

In the method for disinfection of the present

invention, after brought into contact with the target

object, the disinfectant composition of the present

invention or the treatment liquid of the present

invention is left for preferably 30 seconds or more, more

preferably 60 seconds or more and further preferably 3

minutes or more, and preferably 60 minutes or less, more

preferably 50 minutes or less and further preferably 30

minutes or less from the viewpoint of enhancing

disinfecting effects. In this case, the point of time

when the composition or the treatment liquid first comes

into contact with the target object may be the beginning

of leaving.

Note that the temperature at which the composition

or the treatment liquid is left may be a room

temperature, and examples include 100C or more and 300C

or less.

[00691

In the method for disinfection of the present

invention, the contact may be made by immersing the

target object in which a fungus is present in the

disinfectant composition or the treatment liquid of the

present invention, but it is preferably made by a method

of spraying or applying the disinfectant composition or the treatment liquid of the present invention to the target object in which a fungus is present from the viewpoint of enhancing disinfecting effects in an efficient manner.

A method for bringing the disinfectant composition

or the treatment liquid of the present invention into

contact with the target object in which a fungus is

present is preferably spraying or applying, and

preferably a method of spraying in liquid droplet form or

applying in foam form. Specifically, a spray means is

used. In other words, it is preferable to use a

disinfectant article made of a bottle equipped with a

sprayer and filled with the disinfectant composition or

the treatment liquid of the present invention. The

present invention provides a spray bottle-contained

disinfectant article made of a bottle equipped with a

sprayer and filled with the disinfectant composition or

the treatment liquid of the present invention.

[0070]

In the spray bottle-contained disinfectant article

of the present invention, examples of the bottle equipped

with a sprayer and filled with the disinfectant

composition or the treatment liquid of the present

invention include manual spraying devices using no

propellants such as trigger-type spray bottles, pumping

type spray bottles or the like, aerosol sprays using

propellants, and others. The bottle equipped with a sprayer is preferably a trigger-type spray capable of spraying or applying the content in liquid droplet form or foam form, and more preferably a trigger-type spray equipped with a mechanism for spraying the content in liquid droplet form, or a trigger-type spray equipped with a mechanism for forming foam (foam forming mechanism).

[0071]

The method for disinfection of the present

invention is directed to the target object in which a

fungus is present, and it is preferably directed to a

hard surface, a textile product or skin and more

preferably directed to a hard surface.

Examples of the hard surface, textile product or

skin targeted by the method for disinfection of the

present invention include those listed in the

disinfectant composition of the present invention.

[0072]

Examples of a fungus targeted by the method for

disinfection of the present invention include those

listed in the disinfectant composition of the present

invention. Among these, the method for disinfection

shows excellent disinfecting effects on Escherichia coli

and Staphylococcus aureus, and preferably on Escherichia

coli.

[0073]

Preferable aspects of the disinfectant composition

of the present invention are described below.

One aspect of the present invention is a

disinfectant composition containing, (A) an internal

olefin sulfonate with 16 or more and 18 or less carbons,

(B) one or more organic acids selected from

monocarboxylic acids, hydroxy acids and dicarboxylic

acids, the organic acids having an acid dissociation

constant of 3.7 or more and 9 or less at 250C, and water,

wherein a mass ratio between the content of component (A)

and the content of component (B), (B)/(A), is 0.05 or

more and 1 or less.

Further, another aspect of the present invention

is a disinfectant composition containing, (A) an internal

olefin sulfonate with 16 or more and 18 or less carbons,

(B) one or more organic acids selected from

monocarboxylic acids, hydroxy acids and dicarboxylic

acids, the organic acids having an acid dissociation

constant of 3.7 or more and 9 or less at 25°C, and water,

wherein the composition has a pH of 3 or more and 5 or

less at 20°C.

Further, another aspect of the present invention

is a disinfectant composition containing, (A) an internal

olefin sulfonate with 16 or more and 18 or less carbons,

(B) one or more organic acids selected from

monocarboxylic acids, hydroxy acids and dicarboxylic

acids, the organic acids having an acid dissociation constant of 3.7 or more and 9 or less at 250C, (C) an organic solvent with a LogP of 0.5 or more and 10 or less, and water, wherein a mass ratio between the content of component (A) and the content of component (C),

(C)/(A), is 0.3 or more and 0.7 or less.

Further, another aspect of the present invention

is a disinfectant composition containing, (A) an internal

olefin sulfonate with 16 or more and 18 or less carbons,

(B) one or more organic acids selected from

monocarboxylic acids, hydroxy acids and dicarboxylic

acids, the organic acids having an acid dissociation

constant of 3.7 or more and 9 or less at 250C, (C) an

organic solvent with a LogP of 0.5 or more and 10 or

less, (D) a nonionic surfactant, and water, wherein a

mass ratio of the content of component (A) to the content

of component (D), (A)/(D), is 3 or more and 5 or less.

[0074]

The present invention further discloses the

following disinfectant composition and method for

disinfection in connection with the above embodiments.

The matters stated in the disinfectant composition and

the method for disinfection of the present invention can

be appropriately applied to these aspects, and vice

versa.

[0075]

<1>

A disinfectant composition containing, (A) an

internal olefin sulfonate with 8 or more and 24 or less

carbons (hereinafter referred to as component (A)), (B)

one or more organic acids selected from monocarboxylic

acids, hydroxy acids and dicarboxylic acids (hereinafter

referred to as component (B)) and water.

[0076]

<2>

The disinfectant composition according to <1>,

further containing an organic solvent with a LogP of 0.5

or more and 10 or less as component (C).

[0077]

<3>

The disinfectant composition according to <1> or

<2>, further containing a nonionic surfactant as

component (D).

[0078]

<4>

A disinfectant composition composed of,

essentially (A) an internal olefin sulfonate with 8 or

more and 24 or less carbons (hereinafter referred to as

component (A)), (B) one or more organic acids selected

from monocarboxylic acids, hydroxy acids and dicarboxylic

acids (hereinafter referred to as component (B)),

optionally (C) an organic solvent with a LogP of 0.5 or

more and 10 or less (hereinafter referred to as component

(C)), optionally (D) a nonionic surfactant (hereinafter

referred to as component (D)), and water.

[0079]

<5>

The disinfectant composition according to any of

<1> to <4>, wherein component (A) has preferably 12 or

more and more preferably 16 or more, and preferably 22 or

less, more preferably 20 or less, further preferably 18

or less and furthermore preferably 16 carbons.

[0080]

<6>

The disinfectant composition according to any of

<1> to <5>, wherein component (A) includes internal

olefin sulfonate (IO-lS) with 8 or more and 24 or less

carbons in which a sulfonic acid group is present at

position 2 or more and 4 or less and internal olefin

sulfonate (IO-2S) with 8 or more and 24 or less carbons

in which a sulfonic acid group is present at position 5

or more, and a mass ratio of (IO-lS) to (IO-2S), (10

1S)/(IO-2S), is 0.5 or more and 6.5 or less.

[0081]

<7>

The disinfectant composition according to <6>,

wherein the mass ratio of the content of (IO-lS) to the

content of (IO-2S) in component (A), (IO-1S)/(IO-2S), is

preferably 0.5 or more, more preferably 0.6 or more,

further preferably 0.7 or more, furthermore preferably

0.8 or more and furthermore preferably 1 or more, and

preferably 6.5 or less, more preferably 6 or less,

furthermore preferably 5.5 or less, furthermore

preferably 5 or less, furthermore preferably 4.5 or less,

furthermore preferably 4 or less, furthermore preferably

3.5 or less, furthermore preferably 3 or less,

furthermore preferably 2.5 or less, furthermore

preferably 2 or less and furthermore preferably 1.5 or

less.

[0082]

<8>

The disinfectant composition according to <6> or

<7>, wherein the content of (IO-lS) in component (A) is

preferably 90 mass% or less, more preferably 85 mass% or

less and further preferably 80 mass% or less, and

preferably 30 mass% or more and more preferably 40 mass%

or more.

[0083]

<9>

The disinfectant composition according to any of

<1> to <8>, wherein a salt in component (A) is one or

more selected from alkali metal salts, alkaline earth

metal (1/2 atom) salts, ammonium salts and organic

ammonium salts, and preferably one or more selected from

a sodium salt, a potassium salt and alkanol ammonium

salts with 1 or more and 6 or less carbons.

[0084]

<10>

The disinfectant composition according to any of

<1> to <9>, wherein component (A) is an internal olefin

sulfonate that can be obtained by using as a raw material

an internal olefin with 8 or more and 24 or less carbons

in which a mass ratio of olefin (10-1) with 8 or more and

24 or less carbons in which a double bond is present at

position 1 or more and 3 or less to olefin (10-2) with 8

or more and 24 or less carbons in which a double bond is

present at position 5 or more, (10-1)/(10-2), is 0.50 or

more and 6.5 or less.

[00851

<11>

The disinfectant composition according to <10>,

wherein in the internal olefin with 8 or more and 24 or

less carbons used as a raw material for component (A),

the mass ratio of olefin (10-1) with 8 or more and 24 or

less carbons in which a double bond is present at

position 1 or more and 3 or less to olefin (10-2) with 8

or more and 24 or less carbons in which a double bond is

present at position 5 or more, (10-1)/(10-2), is

preferably 6.5 or less, more preferably 6 or less,

further preferably 5.5 or less, furthermore preferably 5

or less, furthermore preferably 4.5 or less, furthermore

preferably 3 or less, furthermore preferably 2.5 or less,

furthermore preferably 2 or less and furthermore

preferably 1.5 or less, and preferably 0.50 or more, more preferably 0.55 or more and further preferably 0.6 or more.

[00861

<12>

The disinfectant composition according to <10> or

<11>, wherein the olefin as a raw material for component

(A) has preferably 12 or more and more preferably 16 or

more, and preferably 20 or less, more preferably 18 or

less and further preferably 16 carbons.

[0087]

<13>

The disinfectant composition according to any of

<10> to <12>, wherein the content of alfa-olefins in the

internal olefin used as a raw material for component (A)

is preferably 10 mass% or less, more preferably 5 mass%

or less and further preferably 3 mass% or less, and

preferably 0.05 mass% or more and more preferably 0.01

mass% or more.

[00881

<14>

The disinfectant composition according to any of

<1> to <13>, wherein component (B) is an organic acid

with an acid dissociation constant (pKa) at 250C of

preferably 1 or more, more preferably 1.1 or more,

further preferably 1.2 or more, furthermore preferably

1.5 or more, furthermore preferably 2 or more,

furthermore preferably 2.5 or more, furthermore preferably 3 or more and furthermore preferably 3.7 or more, and preferably 10 or less, more preferably 9 or less, further preferably 8 or less, furthermore preferably 7 or less, furthermore preferably 6 or less, furthermore preferably 5.5 or less and furthermore preferably 5 or less.

[00891

<15>

The disinfectant composition according to any of

<1> to <14>, wherein component (B) is an organic acid

whose solubility in water at a pH of 7 is preferably

0.0001 mg/mL or more, more preferably 0.0002 mg/mL or

more, further preferably 0.0003 mg/mL or more,

furthermore preferably 0.001 mg/mL or more, furthermore

preferably 0.01 mg/mL or more, furthermore preferably 0.1

mg/mL or more, furthermore preferably 1 mg/mL or more,

furthermore preferably 10 mg/mL or more, furthermore

preferably 100 mg/mL or more, furthermore preferably 500

mg/mL or more, furthermore preferably 1000 mg/mL or more,

furthermore preferably 5000 mg/mL or more and furthermore

preferably 10000 mg/mL or more, and preferably 200000

mg/mL or less, more preferably 190000 mg/mL or less,

further preferably 180000 mg/mL or less, furthermore

preferably 150000 mg/mL or less, furthermore preferably

100000 mg/mL or less and furthermore preferably 70000

mg/mL or less.

[00901

<16>

The disinfectant composition according to any of

<1> to <15>, wherein component (B) is an organic acid

with preferably 1 or more, and preferably 24 or less,

more preferably 22 or less, further preferably 20 or

less, furthermore preferably 18 or less, furthermore

preferably 16 or less, furthermore preferably 14 or less,

furthermore preferably 12 or less, furthermore preferably

10 or less and furthermore preferably 8 or less carbons.

[0091]

<17>

The disinfectant composition according to any of

<1> to <16>, wherein component (B) is an organic acid

with a molecular weight of preferably 30 or more, more

preferably 35 or more, further preferably 40 or more,

furthermore preferably 60 or more and furthermore

preferably 80 or more, and preferably 500 or less, more

preferably 490 or less, further preferably 480 or less,

furthermore preferably 400 or less, furthermore

preferably 350 or less, furthermore preferably 300 or

less, furthermore preferably 250 or less and furthermore

preferably 200 or less.

[0092]

<18>

The disinfectant composition according to any of

<1> to <17>, wherein component (B) is one or more organic

acids selected from caprylic acid, sorbic acid, caproic acid, propionic acid, formic acid, acetic acid, benzoic acid, salicylic acid, lactic acid, tartaric acid, malic acid, glycolic acid, gluconic acid, citric acid, maleic acid, fumaric acid, oxalic acid, adipic acid, glutamic acid, succinic acid, sebacic acid and azelaic acid, preferably one or more organic acids selected from caprylic acid, caproic acid, sorbic acid, lactic acid, glycolic acid, gluconic acid, fumaric acid, succinic acid, adipic acid, sebacic acid and azelaic acid, more preferably one or more organic acids selected from sorbic acid, lactic acid, succinic acid, glycolic acid, gluconic acid, sebacic acid and adipic acid, and further preferably one or more organic acids selected from lactic acid, succinic acid, gluconic acid and adipic acid.

[00931

<19>

The disinfectant composition according to any of

<1> to <18>, containing component (A) in an amount of

preferably 0.001 mass% or more, more preferably 0.002

mass% or more, further preferably 0.01 mass% or more,

furthermore preferably 0.1 mass% or more, furthermore

preferably 0.5 mass% or more and furthermore preferably 1

mass% or more, and preferably 50 mass% or less, more

preferably 30 mass% or less, further preferably 15 mass%

or less, furthermore preferably 10 mass% or less,

furthermore preferably 5 mass% or less and furthermore

preferably 3 mass% or less.

[0094]

<20>

The disinfectant composition according to any of

<1> to <19>, containing component (B) in an amount of

preferably 0.0001 mass% or more, more preferably 0.0002

mass% or more, further preferably 0.001 mass% or more,

furthermore preferably 0.01 mass% or more, furthermore

preferably 0.1 mass% or more and furthermore preferably

0.2 mass% or more, and preferably 10 mass% or less, more

preferably 5 mass% or less, further preferably 3 mass% or

less, furthermore preferably 2 mass% or less, furthermore

preferably 1.5 mass% or less and furthermore preferably 1

mass% or less.

[0095]

<21>

The disinfectant composition according to any of

<1> to <20>, wherein a total content of components (A)

and (B) is preferably 0.01 mass% or more, more preferably

0.02 mass% or more, further preferably 0.1 mass% or more,

furthermore preferably 0.5 mass% or more and furthermore

preferably 1 mass% or more, and preferably 20 mass% or

less, more preferably 15 mass% or less, further

preferably 10 mass% or less and furthermore preferably 5

mass% or less.

[00961

<22>

The disinfectant composition according to any of

<1> to <21>, wherein a mass ratio between the content of

component (A) and the content of component (B), (B)/(A),

is preferably 0.001 or more, more preferably 0.01 or

more, further preferably 0.02 or more, furthermore

preferably 0.05 or more, furthermore preferably 0.08 or

more and furthermore preferably 0.1 or more, and

preferably 4 or less, more preferably 3 or less, further

preferably 2 or less, furthermore preferably 1.5 or less,

furthermore preferably 1 or less, furthermore preferably

0.8 or less and furthermore preferably 0.5 or less.

[0097]

<23>

The disinfectant composition according to any of

<2> to <22>, wherein component (C) is an organic solvent

with a LogP of preferably 0.8 or more and more preferably

1 or more, and preferably 7 or less, more preferably 5 or

less, further preferably 4 or less and furthermore

preferably 3 or less.

[0098]

<24>

The disinfectant composition according to any of

<2> to <23>, wherein component (C) is an organic solvent

with preferably 2 or more, more preferably 4 or more and

further preferably 6 or more, and preferably 30 or less,

more preferably 28 or less, further preferably 24 or

less, furthermore preferably 20 or less, furthermore preferably 16 or less, furthermore preferably 14 or less and furthermore preferably 12 or less carbons.

[00991

<25>

The disinfectant composition according to any of

<2> to <24>, wherein component (C) is one or more organic

solvents selected from hexyl glycerin, octanediol,

hexanol, 2-ethylhexyl glyceryl ether, heptanol,

decanediol, octanol, glyceryl caprylate, 3-isodecyloxy

1,2-propanediol, hexyldecanol, octyldodecanol and

decyltetradecanol, preferably one or more organic

solvents selected from octanediol, 2-ethylhexyl glyceryl

ether, glyceryl caprylate, 1-octanol, 3-isodecyloxy-1,2

propanediol and hexyldecanol, and more preferably one or

more organic solvents selected from octanediol, 2

ethylhexyl glyceryl ether, glyceryl caprylate and 1

octanol.

[0100]

<26>

The disinfectant composition according to any of

<2> to <25>, containing component (C) in an amount of

preferably 0.0001 mass% or more, more preferably 0.0002

mass% or more, further preferably 0.001 mass% or more,

furthermore preferably 0.01 mass% or more, furthermore

preferably 0.1 mass% or more, furthermore preferably 0.5

mass% or more and furthermore preferably 1 mass% or more,

and preferably 50 mass% or less, more preferably 30 mass% or less, further preferably 20 mass% or less, furthermore preferably 15 mass% or less, furthermore preferably 10 mass% or less, furthermore preferably 5 mass% or less, furthermore preferably 3 mass% or less and furthermore preferably 2 mass% or less.

[0101]

<27>

The disinfectant composition according to any of

<2> to <26>, wherein a mass ratio between the content of

component (A) and the content of component (C), (C)/(A),

is preferably 0.001 or more, more preferably 0.01 or

more, further preferably 0.05 or more, furthermore

preferably 0.1 or more and furthermore preferably 0.3 or

more, and preferably 10 or less, more preferably 5 or

less, further preferably 3 or less, furthermore

preferably 1 or less and furthermore preferably 0.7 or

less.

[0102]

<28>

The disinfectant composition according to any of

<3> to <27>, wherein component (D) is one or more

selected from polyoxyalkylene alkyl ethers having an

alkyl group with 8 or more and 18 or less carbons,

polyoxyalkylene alkenyl ethers having an alkenyl group

with 8 or more and 18 or less carbons, polyoxyalkylene

sorbitan fatty acid esters having a fatty acid group with

8 or more and 18 or less carbons, alkyl glycosides having an alkyl group with 8 or more and 18 or less carbons, alkyl polyglycosides having an alkyl group with 8 or more and 18 or less carbons, sucrose fatty acid esters having a fatty acid group with 8 or more and 18 or less carbons and alkyl polyglyceryl ethers having an alkyl group with

8 or more and 18 or less carbons.

[0103]

<29>

The disinfectant composition according to any of

<3> to <28>, containing a compound represented by the

following general formula (Dl) as component (D):

Rld (OR 2 d) xGy (Dl)

wherein Rld represents a straight-chain or

branched-chain alkyl group with 8 or more and 18 or less

carbons, R 2 d represents an alkylene group with 2 or more

and 4 or less carbons, G represents a residue derived

from a sugar with 5 or 6 carbons, x represents numbers

whose average value is 0 or more and 5 or less, and y

represents numbers whose average value is 1 or more and 3

or less.

[0104]

<30>

The disinfectant composition according to any of

<3> to <29>, containing a compound represented by the

following general formula (D2) as component (D):

R 3 d-O-[ (C 2 H 4 0)s(C 3 H6 O)t]-H (D2) wherein R 3d is a straight-chain or branched-chain alkyl group with 8 or more and 18 or less carbons or a straight-chain or branched-chain alkenyl group with 8 or more and 18 or less carbons; and s and t are average numbers of added moles, and s is a number of 1 or more and 50 or less and t is a number of 0 or more and 5 or less, and (C 2 H 4 0) and (C3 H 6 0) may be random polymers or block polymers.

[0105]

<31>

The disinfectant composition according to any of

<3> to <30>, containing component (D) in an amount of

preferably 0.001 mass% or more, more preferably 0.002

mass% or more, further preferably 0.01 mass% or more,

furthermore preferably 0.05 mass% or more, furthermore

preferably 0.1 mass% or more and furthermore preferably

0.5 mass% or more, and preferably 50 mass% or less, more

preferably 30 mass% or less, further preferably 10 mass%

or less, furthermore preferably 5 mass% or less,

furthermore preferably 3 mass% or less, furthermore

preferably 1.5 mass% or less, furthermore preferably 1

mass% or less and furthermore preferably 0.8 mass% or

less.

[0106]

<32>

The disinfectant composition according to any of

<3> to <31>, wherein a mass ratio of the content of component (A) to the content of component (D), (A)/(D), is preferably 0.1 or more, more preferably 0.5 or more, further preferably 1 or more, furthermore preferably 2 or more and furthermore preferably 3 or more, and preferably

10 or less, more preferably 8 or less and further

preferably 5 or less.

[0107]

<33>

The disinfectant composition according to any of

<1> to <32>, containing water in an amount of preferably

20 mass% or more, more preferably 30 mass% or more,

further preferably 40 mass% or more and furthermore

preferably 50 mass% or more, and preferably 99 mass% or

less and more preferably 98 mass% or less.

[0108]

<34>

The disinfectant composition according to any of

<1> to <33>, wherein the composition has a pH of

preferably 1 or more, more preferably 2 or more and

further preferably 3 or more, and preferably 7 or less,

more preferably 6.5 or less, further preferably 6 or

less, furthermore preferably 5.5 or less, furthermore

preferably 5 or less and furthermore preferably 4.5 or

less at 20°C.

[0109]

<35>

The disinfectant composition according to any of

<1> to <34>, wherein the composition is for use in hard

surfaces and preferably for use in hard surfaces selected

from bathrooms, bathtubs, washbowls, tiles, lavatories,

wash basins, mirrors, kitchen sinks, counter tops,

plumbing fixtures, furniture and home appliances.

[0110]

<36>

The disinfectant composition according to any of

<1> to <34>, wherein the composition is for use in

textile products and preferably for use in textile

products selected from clothing, towels, bedding and

textile products for bedding (sheets, pillowcases or the

like).

[0111]

<37>

The disinfectant composition according to any of

<1> to <34>, wherein the composition is for use in

cleansing of skin and preferably for use in cleansing of

skin selected from hand fingers, body and hair.

[0112]

<38>

The disinfectant composition according to any of

<1> to <37>, wherein a target fungus is a fungus selected

from yeasts represented by the genus Saccharomyces, the

genus Rhodotorula, the genus Pichia and the genus

Candida, molds represented by the genus Cladosporium, the genus Phoma and the genus Exophiala, gram-negative bacteria including food poisoning bacteria such as bacteria of the genus Escherichia such as Escherichia coli or the like, bacteria of the genus Pseudomonas such as Pseudomonas aeruginosa, Pseudomonas putida or the like, bacteria of the genus Serratia such as Serratia marcescens or the like, bacteria of the genus

Burkholderia such as Burkholderia cepacia or the like,

bacteria of the genus Klebsiella such as Klebsiella

pneumoniae, Klebsiella oxytoca or the like, bacteria of

the genus Enterobacter such as Enterobacter cloacae or

the like, bacteria of the genus Alcaligenes such as

Alcaligenes faecalis or the like, bacteria of the genus

Providencia such as Providencia rettgeri or the like,

bacteria of the genus Methylobacterium, bacteria of the

genus Salmonella and others, and gram-positive bacteria

represented by bacteria of the genus Staphylococcus such

as Staphylococcus aureus, Staphylococcus saprophyticus or

the like and bacteria of the genus Enterococcus such as

Enterococcus faecalis or the like, and preferably a

fungus selected from Escherichia coli and Staphylococcus

aureus.

[01131

<39>

A method for disinfection including, bringing the

disinfectant composition according to any of <1> to <38>

as a raw solution or as a treatment liquid diluted with water into contact with a target object in which a fungus is present.

[0114]

<40>

The method for disinfection according to <39>,

wherein the hardness of the water used to dilute the

disinfectant composition is preferably 20°dH or less and

more preferably 10°dH or less, and O0 dH or more.

[0115]

<41>

The method for disinfection according to <39> or

<40>, wherein the treatment liquid contains component (A)

in an amount of preferably 0.0003 mass% or more, more

preferably 0.0005 mass% or more, further preferably 0.003

mass% or more, furthermore preferably 0.03 mass% or more,

furthermore preferably 0.2 mass% or more and furthermore

preferably 0.3 mass% or more, and preferably 15 mass% or

less, more preferably 10 mass% or less, further

preferably 5 mass% or less, furthermore preferably 3

mass% or less, furthermore preferably 1.5 mass% or less

and furthermore preferably 1 mass% or less.

[0116]

<42>

The method for disinfection according to any of

<39> to <41>, wherein the treatment liquid contains

component (B) in an amount of preferably 0.00003 mass% or

more, more preferably 0.00006 mass% or more, further preferably 0.0003 mass% or more, furthermore preferably

0.003 mass% or more, furthermore preferably 0.03 mass% or

more and furthermore preferably 0.06 mass% or more, and

preferably 3 mass% or less, more preferably 1.5 mass% or

less, further preferably 1 mass% or less and furthermore

preferably 0.5 mass% or less.

[0117]

<43>

The method for disinfection according to any of

<39> to <42>, wherein the treatment liquid optionally

contains component (C) in an amount of preferably 0.00003

mass% or more, more preferably 0.00006 mass% or more,

further preferably 0.0003 mass% or more, furthermore

preferably 0.003 mass% or more, furthermore preferably

0.03 mass% or more, furthermore preferably 0.15 mass% or

more and furthermore preferably 0.3 mass% or more, and

preferably 15 mass% or less, more preferably 10 mass% or

less, further preferably 5 mass% or less, furthermore

preferably 4 mass% or less, furthermore preferably 3

mass% or less, furthermore preferably 2 mass% or less,

furthermore preferably 1 mass% or less and furthermore

preferably 0.5 mass% or less.

[0118]

<44>

The method for disinfection according to any of

<39> to <43>, wherein the treatment liquid optionally

contains component (D) in an amount of preferably 0.0003 mass% or more, more preferably 0.0006 mass% or more, further preferably 0.003 mass% or more, furthermore preferably 0.0015 mass% or more, furthermore preferably

0.03 mass% or more and furthermore preferably 0.15 mass%

or more, and preferably 15 mass% or less, more preferably

10 mass% or less, further preferably 3 mass% or less,

furthermore preferably 1.5 mass% or less, furthermore

preferably 1 mass% or less, furthermore preferably 0.5

mass% or less, furthermore preferably 0.3 mass% or less

and furthermore preferably 0.2 mass% or less.

[0119]

<45>

The method for disinfection according to any of

<39> to <44>, wherein the content of a disinfecting base

agent other than components (A) and (B) in the treatment

liquid is preferably 6 mass% or less, more preferably 0.3

mass% or less, further preferably 0.03 mass% or less and

furthermore preferably 0.003 mass% or less.

[0120]

<46>

The method for disinfection according to any of

<39> to <45>, wherein the disinfectant composition or the

treatment liquid is brought into contact with the target

object at a ratio of preferably 0.1 g or more, more

preferably 0.2 g or more and further preferably 1 g or

more, and preferably 50 g or less, more preferably 20 g or less and further preferably 10 g or less relative to an area of 100 cm 2 of the target object.

[0121]

<47>

The method for disinfection according to any of

<39> to <46>, wherein after brought into contact with the

target object, the disinfectant composition or the

treatment liquid is left for preferably 30 seconds or

more, more preferably 60 seconds or more and further

preferably 3 minutes or more, and preferably 60 minutes

or less, more preferably 50 minutes or less and further

preferably 30 minutes or less.

Examples

[0122]

The disinfectant compositions shown in Tables 1 to

3 were prepared by using the following formulation

components, and evaluated for the items described later.

The results are shown in Tables 1 to 3. For the cleaning

agent compositions in Tables 1 and 2, components (A) to

(D) were added in the formulation amounts in the tables

and dissolved at a room temperature (250C) . After the

formulation, the pH was adjusted to those in Tables 1 to

3 by using sodium hydroxide. Note that the pH was

measured by a glass electrode method. Further, the mass

percentages of the formulation components in Tables 1 to

3 are all numerical values based on the active

components.

[0123]

<Formulation component>

Component (A)

• C1610S-K: an internal olefin sulfonate potassium salt

obtained in the following production example 1

- C1810S-K: an internal olefin sulfonate potassium salt

obtained in the following production example 2

[0124]

[Production example of raw material for component (A):

production example of internal olefin with 16 carbons]

7000 g (28.9 mol) of 1-hexadecanol (product name:

KALCOL 6098, manufactured by Kao Corporation) and 700 g

(10 mass% relative to the raw material alcohol) of y

alumina (Strem Chemicals, Inc.) as a solid acid catalyst

were prepared in a flask with a stirrer, and reacted

under stirring for a reaction period of time

appropriately adjusted while nitrogen was flowed (at 7000

mL/min.) in the system at 280°C. The obtained crude

internal olefin was transferred to a distillation flask

and distilled at 148-158°C/0.5 mmHg, thereby obtaining an

internal olefin with 16 carbons with an olefin purity of

100%. A double bond distribution in the obtained

internal olefin is as follows. In the double bond

distribution (mass%) in the internal olefin, position

1/position 2/position 3/position 4/position 5/position

6/position 7/position

8=1.87/21.01/18.20/18.72/14.78/12.15/6.64/6.64.

[01251

The double bond distribution in the internal

olefin was determined by the aforementioned method.

Note that an internal olefin in which a double

bond is present at position 7 and an internal olefin in

which a double bond is present at position 8 cannot be

structurally distinguished in the olefin with 16 carbons,

but they are distinguished when the olefin is sulfonated,

so that the value of the amount of the internal olefin in

which a double bond is present at position 7 divided by 2

is shown in the field for each of positions 7 and 8 for

convenience.

[0126]

[Production example 1: production example of potassium

internal olefin sulfonate with 16 carbons]

Using a thin-film sulfonation reactor having an

outer jacket, the internal olefin obtained in the above

production example of raw material was sulfonated with a

sulfur trioxide gas by passing cooling water at 200C

through the reactor's outer jacket. The molar ratio of

SO 3 to the internal olefin during the sulfonation

reaction was set to 1.09. The obtained sulfonated

product was added to an aqueous alkali solution prepared

from potassium hydroxide in an amount 1.5 times the

theoretic acid value, and neutralized by stirring at 300C for 1 hour. The neutralized product was hydrolyzed by heating in an autoclave at 1600C for 1 hour, thereby obtaining (A-1) a potassium internal olefin sulfonate product. The content proportions (mass percentages) in the internal olefin sulfonate to which a sulfonic acid group is bonded were as follows: position 1/ position

2/position 3/position 4/positions 5 to

9=1.69/17.51/15.65/20.28/44.97. (IO-1S)/(IO-2S) was

equal to 1.19. In (A-1), the mass of a potassium ion

relative to 100 g of the internal olefin sulfonate in

acid form was 12.8 g.

[0127]

[Production example of raw material for component (A):

production example of internal olefin with 18 carbons]

7000 g (25.9 mol) of 1-octadecanol (product name:

KALCOL 8098, manufactured by Kao Corporation) and 700 g

(10 mass% relative to the raw material alcohol) of y

alumina (Strem Chemicals, Inc.) as a solid acid catalyst

were prepared in a flask with a stirrer, and reacted

under stirring for a reaction period of time

appropriately adjusted while nitrogen was flowed (at 7000

mL/min.) in the system at 280°C. The obtained crude

internal olefin was transferred to a distillation flask

and distilled at 148-158°C/0.5 mmHg, thereby obtaining an

internal olefin with 18 carbons with an olefin purity of

100%. A double bond distribution in the obtained

internal olefin is as follows. In the double bond distribution (mass%) in the internal olefin, position

1/position 2/position 3/position 4/position 5/position

6/position 7/position 8/position

9=1.48/25.99/21.17/17.73/11.86/8.43/5.95/3.70/3.70.

[0128]

The double bond distribution in the internal

olefin was determined by the aforementioned method.

Note that an internal olefin in which a double

bond is present at position 8 and an internal olefin in

which a double bond is present at position 9 cannot be

structurally distinguished in the olefin with 18 carbons,

but they are distinguished when the olefin is sulfonated,

so that the value of the amount of the internal olefin in

which a double bond is present at position 8 divided by 2

is shown in the field for each of positions 8 and 9 for

convenience.

[0129]

[Production example 2: production example of potassium

internal olefin sulfonate with 18 carbons]

Using a thin-film sulfonation reactor having an

outer jacket, the internal olefin obtained in the above

production example of raw material was sulfonated with a

sulfur trioxide gas by passing cooling water at 200C

through the reactor's outer jacket. The molar ratio of

SO 3 to the internal olefin during the sulfonation

reaction was set to 1.09. The obtained sulfonated

product was added to an aqueous alkali solution prepared from potassium hydroxide in a 1.5 molar times larger amount than the theoretic acid value, and neutralized by stirring at 300C for 1 hour. The neutralized product was hydrolyzed by heating in an autoclave at 1600C for 1 hour, thereby obtaining (A-2) a potassium internal olefin sulfonate product. The content proportions (mass percentages) in the internal olefin sulfonate to which a sulfonic acid group is bonded were as follows: position

1/ position 2/position 3/position 4/positions 5 to

9=1.37/20.67/17.43/20.95/39.57. (IO-1S)/(IO-2S) was

equal to 1.49. In (A-2), the mass of a potassium ion

relative to 100 g of the internal olefin sulfonate in

acid form was 12.8 g.

[0130]

Component (A') (comparative example component for

component (A))

- ES (3): a sodium polyoxyethylene (3) alkyl ether

sulfate, EMAL 327, manufactured by Kao Corporation

[0131]

Component (B)

- Adipic acid: pKa (25°C) 4.3, solubility (pH=7) 30673

mg/mL, 6 carbons, molecular weight 146, manufactured by

FUJIFILM Wako Pure Chemical Corporation

- Succinic acid: pKa (25 0 C) 4.3, solubility (pH=7) 69013

mg/mL, 4 carbons, molecular weight 118, manufactured by

FUJIFILM Wako Pure Chemical Corporation

- Azelaic acid: pKa (250C) 4.15, solubility (pH=7) 689

mg/mL, 9 carbons, molecular weight 188, manufactured by

FUJIFILM Wako Pure Chemical Corporation

• Gluconic acid: pKa (25 0 C) 3.86, solubility (pH=7)

126141 mg/mL, 6 carbons, molecular weight 196,

manufactured by FUJIFILM Wako Pure Chemical Corporation

• Sorbic acid: pKa (250 C) 4.8, solubility (pH=7) 299

mg/mL, 6 carbons, molecular weight 112, manufactured by

FUJIFILM Wako Pure Chemical Corporation

• Lactic acid: pKa (250 C) 3.8, solubility (pH=7) 21268

mg/mL, 3 carbons, molecular weight 90, manufactured by

FUJIFILM Wako Pure Chemical Corporation

Component (B') (comparative component for component (B))

• Hydrochloric acid: manufactured by FUJIFILM Wako Pure

Chemical Corporation

[0132]

Component (C)

- 2-ethylhexyl glyceryl ether: LogP 1.93, 11 carbons,

manufactured by Kao Corporation

- 1,2-octanediol: LogP 1.68, 8 carbons, manufactured by

FUJIFILM Wako Pure Chemical Corporation

• 1-octanol: LogP 2.64, 8 carbons, manufactured by

FUJIFILM Wako Pure Chemical Corporation

- glyceryl caplyrate: LogP 1.64, 11 carbons, SUNSOFT NO.

700P-2-C, manufactured by Taiyo Kagaku Co., Ltd.

[0133]

Component (D)

- An alkyl glucoside: a compound represented by the

general formula (Dl) in which Rld is an alkyl group with

12 carbons, x is 0, y is 1.35 to 1.45 and G is a residue

derived from glucose, MYDOL 12, manufactured by Kao

Corporation

• C12E03: a compound represented by the general formula

(D2) in which R 3 d is an alkyl group with 12 carbons, s is

3 and t is 0, EMULGEN 103, manufactured by Kao

Corporation

• C12E06: a compound represented by the general formula

(D2) in which R 3 d is an alkyl group with 12 carbons, s is

6 and t is 0, EMULGEN 108, manufactured by Kao

Corporation

• C12E012: a compound represented by the general formula

(D2) in which R 3d is an alkyl group with 12 carbons, s is

12 and t is 0, EMULGEN 120, manufactured by Kao

Corporation

• C12E023: a compound represented by the general formula

(D2) in which R 3 d is an alkyl group with 12 carbons, s is

23 and t is 0, EMULGEN 123P, manufactured by Kao

Corporation

[0134]

<Disinfecting ability evaluation (1)>

• Culturing conditions

5 pL was extracted from a glycerol stock of

Escherichia coli NBRC3972 stored at -80°C in a 10%

glycerol, and inoculated into 5 mL of a Soybean Casein

Digest (SCD) broth and cultured at 370C (with reciprocal

shaking) at 200 rpm for 16 hours. 1 mL of the cultured

solution was subjected to centrifugation with a

centrifugal force of 7,000xg for 5 minutes at a room

temperature, and a supernatant was removed and suspended

in a saline solution. After this operation was repeated

twice, the fungal solution was conditioned with a saline

solution such that OD6 oo was 0.8, and used in the

following test.

[0135]

Conditions for disinfection test

Each disinfectant composition was diluted 3 times

(v/v) with water at 5 0 dH (German hardness), and used as a

test solution.

20 pL of the fungal solution was inoculated into 2

mL of the test solution or 2 mL of a saline solution used

as a control which had been dispensed to test tubes, and

the test solution was made into contact with the fungus

by reciprocal shaking at 170 rpm at a room temperature.

After a predetermined period of time (1 minute) of

contact, 100 pL of the test solution was mixed with 900

pL of a Lecithin-Polysorbate (LP) dilution which had been

dispensed in advance to a 24-hole plate, thereby

inactivating the test solution. The test solution was

further diluted with the LP dilution, and 100 pL was

smeared on a SCD-LP agar culture medium. After culturing

overnight at 370C, the number of colonies formed on the agar culture medium was counted to calculate the viable bacterial count. The value of the logarithm of the viable bacterial count in the test area subtracted from the logarithm of the viable bacterial count in the control was quantified as a disinfection activity value and shown in Tables 1 and 2.

[01361

[Table 1]

F Co

F Cs

O O r a C t CQ C

[0137]

[Table 21

0 (~'1 - 6 -~ ~ ~

(~'1 0 - 6 -~ ~ ~

0 (~'1 - 6 -~ ~ ~

0 '~ *f~) (~'1 - 6 -~ ~ ~

0 * * -~ ~ - - 6 ~ C

0 '~ *f~) (~'1 - * * -~ ~ 6 ~

* -

0 I- (~'1 - -~ ~

* - ~

0 I- (~'1 - * ~ *

0 I- _ ~ (~'1 * I - 6 6

0 *1~) I- _ ~ (~'1 6 6 *

- - ~

- ~- -~

*-~ C- *~ (~'1 cfl 0 ~ - -~ cn '~ - c'1 ~TJ -~

~ .C- ~ 0 a 0000 ~ _ -

0 C. <

(0 0 ss~m)uoipNnauoJ

uoIlisodaIo31u1?13~JuisiQ

[0138]

<Disinfecting ability evaluation (2)>

The same test as in the disinfecting ability

evaluation (1) was conducted except that each

disinfectant composition shown in Table 3 was used as a

raw solution without dilution as a test solution, thereby

calculating the disinfection activity value. The results

are shown in Table 3.

[01391

[Table 31

000 CA~

C> r

C>C>0

U~ CA r

-C'g u u uf a) 6 2;t

0.

6%suu 6 2un~j

uojiod oojujoji0 c

0 14 0

<Cleaning ability test>

A mixture of 100 g of beef tallow, 100 g of

soybean oil, 2.5 g of monooleic acid, 1.0 g of Sudan III

(manufactured by FUJIFILM Wako Pure Chemical Corporation)

and 600 mL of chloroform was used as a model contaminant.

A 76 mmx26 mm glass slide (manufactured by Matsunami

Glass Ind., Ltd., S2441) was uniformly coated with the

prepared model contaminant in a total of 0.04 g on both

sides, and used as a model fat-contaminated glass slide.

Water whose hardness was conditioned to 5°dH by adding

calcium chloride and magnesium chloride to deionized

water at proportions of 2:1 by mass ratio was used for

cleaning. Each disinfectant composition shown in Table 4

was mixed to 0.7 L of the conditioned water, and used as

a treatment liquid. The composition was mixed such that

the total concentration of components (A) or (A') and (D)

in the treatment liquid was 0.023 mass%. Using a

Leenert's tester, 0.7 L of the treatment liquid and 6

model fat-contaminated glass slides (manufactured by

Matsunami Glass Ind., Ltd., S2441) were in a 1-liter

cleaning test glass beaker and set on the tester. The

glass slides were cleaned by stirring at a stirring rate

of 250 rpm for 3 minutes in the treatment liquid whose

temperature was set to 30°C. The glass slides after

cleaning were transferred to a beaker containing 0.7 L of

5°dH water and rinsed at a stirring rate of 250 rpm for 1

minute, and dried at a room temperature. The cleaning rates of the model fat-contaminated glass slides obtained in the above cleaning test were calculated by the following formula. The values in Table 3 are the average values of the cleaning rates of the 6 glass slides.

Cleaning rate (%)=[1-(weight of glass after

cleaning-weight of glass before coating with model

fat)/(weight of glass after coating with model fat-weight

of glass before coating with model fat)]xlOO

[0141]

[Table 4]

Comparative Exampleexml example 1 1

(A) C161OS-K 3

e (A') ES (3) 3

[ (B) Adipic acid 0.3 0.3 o o~ S (D) Alkyl glucoside 0.75 0.75

S0 Ion exchange water Balance Balance

Total 100 100

pH (20°C) 4 4

(B)/(A) (mass ratio) 0.1

Cleaning rate (%) 86.6 52.8 Evaluation Disinfecting ability (1) 4.00 0.57 (E.coli)

Claims (15)

1. A disinfectant composition comprising, (A) an

internal olefin sulfonate with 8 or more and 24 or less

carbons (hereinafter referred to as component (A)), (B)

one or more organic acids selected from monocarboxylic

acids, hydroxy acids and dicarboxylic acids (hereinafter

referred to as component (B)) and water.

2. The disinfectant composition according to claim 1,

further comprising an organic solvent with a LogP of 0.5

or more and 10 or less as a component (C).

3. The disinfectant composition according to claim 1

or 2, further comprising a nonionic surfactant as a

component (D).

4. A disinfectant composition consisting of,

essentially (A) an internal olefin sulfonate with 8 or

more and 24 or less carbons (hereinafter referred to as

component (A)), (B) one or more organic acids selected

from monocarboxylic acids, hydroxy acids and dicarboxylic

acids (hereinafter referred to as component (B)),

optionally (C) an organic solvent with a LogP of 0.5 or

more and 10 or less (hereinafter referred to as component

(C)), optionally (D) a nonionic surfactant (hereinafter

referred to as component (D)), and water.

5. The disinfectant composition according to any one

of claims 1 to 4, wherein a mass ratio between the

content of the component (A) and the content of the

component (B), (B)/(A), is 0.01 or more and 2 or less.

6. The disinfectant composition according to any one

of claims 1 to 4, wherein a mass ratio between the

content of the component (A) and the content of the

component (B), (B)/(A), is 0.05 or more and 1 or less.

7. The disinfectant composition according to any one

of claims 1 to 6, wherein the component (A) has 16 or

more and 18 or less carbons.

8. The disinfectant composition according to any one

of claims 1 to 7, wherein the component (B) is an organic

acid having an acid dissociation constant of 3.7 or more

and 9 or less at 25°C.

9. The disinfectant composition according to any one

of claims 1 to 8, wherein the component (B) is an organic

acid whose solubility in water at a pH of 7 is 100 mg/mL

or more and 100000 mg/mL or less.

10. The disinfectant composition according to any one

of claims 1 to 9, wherein the component (B) is one or more organic acids selected from lactic acid, succinic acid, gluconic acid and adipic acid.

11. The disinfectant composition according to any one

of claims 3 to 10, wherein the component (D) is one or

more selected from alkyl glycosides having an alkyl group

with 8 or more and 18 or less carbons, alkyl

polyglycosides having an alkyl group with 8 or more and

18 or less carbons and polyoxyalkylene alkyl ethers

having an alkyl group with 8 or more and 18 or less

carbons.

12. The disinfectant composition according to any one

of claims 1 to 11, wherein the composition has a pH of 7

or less at 20°C.

13. A method for disinfection comprising, bringing the

disinfectant composition according to any one of claims 1

to 12 as a raw solution or after dilution with water into

contact with a target object in which a fungus is

present.

14. The method for disinfection according to claim 13,

wherein the target object is a hard surface.

15. The method for disinfection according to claim 13

or 14, wherein the fungus is Escherichia coli.